Recent content by ben133

  1. B

    Feeling a bit lost with an MPhys degree

    I'm in the penultimate year of my MPhys degree and I am on track to get a 2.1 I am good friends with the people in the year above me and speaking to them has made me feel a little lost re: careers. Medical physics is something that really interests me, and something I was planning on...
  2. B

    Free fall acceleration (time elapsed, initial & final speed)

    A single splash is seen, hence they hit the water at the same time. Thus, given the initial velocity of the first stone, and the acceleration due to gravity, how long does it take for it to hit the water? For b, if it is to cover the same distance in the time it takes a - 1second, what must...
  3. B

    Textbook recommendations for General Physics I

    Halliday Resnick and Walker - fundamentals of physics is pretty good. https://www.amazon.com/dp/0470044721/?tag=pfamazon01-20
  4. B

    Pressure difference in two pipelines

    V.quickly I get 25725 Pa as the height difference is actually 2.5m due to pipe B having more water in it than pipe A (0.5m more). If you made the difference 2.50312 you'd get the answer given, maybe the error is due to assuming a flat fluid boundary instead of a meniscus, but that's just a wild...
  5. B

    Quantum Tunneling Minimum Energy

    Ok, admittedly I stopped reading after the first equation, as I think the rest may be irrelevant (what level of study are you at?). I'd see this as a coulomb repulsion problem. Your statement: 'In quantum mechanics, the particle with energy far lower than a barrier can still penetrate, isn't it...
  6. B

    Understanding Refraction: The Mystery of the Immersed Pencil

    Do you understand why it looks bent and larger?
  7. B

    How Do You Calculate Resistance and Current in a Carbon Block Using Ohm's Law?

    From what I've read the block is a cuboid. Imagine a square that's 0.5cm by 0.5cm, now stretch that back in the third dimension by 3cm, and Bob's your uncle. A similar shape to a packet of gum.
  8. B

    What is the maximum height h of his jump above the end of the ramp

    Split the velocity into its vertical and horizontal components. Then just calculate how long until the vertical component equals zero, this will be the time equivalent to the maximum height before the skier starts to descend again. You should have learned the equations of motion, and the...
Back
Top